[Technical Field]
[0001] The present invention relates to an optical semiconductor lighting apparatus.
[Background Art]
[0002] Compared with incandescent light and fluorescent light, optical semiconductors, such
as LEDs or LDs, consume low power, have a long lifespan, and have high durability
and high brightness. Due to these advantages, optical semiconductors have recently
attracted much attention as one of components for lighting.
[0003] Facilities, such as underground parking lots, need to be equipped with lighting apparatuses
having illuminance higher than that defined in Attached Table 1 of "Regulation for
Standard of Evacuation/Fire Prevention Structure of Building". Lighting apparatuses
based on the above-described optical semiconductors (hereinafter, referred to as semiconductor
lighting) are increasingly installed in buildings.
[0004] Also, these semiconductor lighting needs to maintain airtight seal to prevent penetration
of water, such that the semiconductor lighting can satisfy IP grade with respect to
lighting apparatuses (grade satisfying waterproofing and dustproofing) according to
installation places, such as underground parking lots, or surroundings.
[0005] Meanwhile, various efforts have recently been made to save energy all over the world.
As part of these efforts to save energy, various technologies have been developed
for reducing power consumption of lighting apparatuses installed in buildings, streetlights,
houses, and the like.
[0006] In order to reduce power consumption of lighting apparatuses, various dimming technologies
have been developed for selectively turning on/off the lighting apparatuses or adjusting
the illuminance of the lighting apparatuses according to surrounding brightness.
[0007] For the dimming control, a dimming signal is input to a lighting apparatus as an
analog output, and the lighting apparatus receives the dimming signal and adjusts
brightness.
[0008] According to the related art, a lighting apparatus and a dimming controller, which
outputs a dimming signal according to a user's manipulation, are connected through
a cable. Therefore, as the length of the cable increases, a contact resistance also
increases. Hence, noise may be generated, and the dimming control desired by the user
may not be achieved because the dimming signal is affected by the noise.
[0009] In addition, due to the use of the cable, it is inconvenient to install the lighting
apparatus and the dimming controller. Moreover, there is a limitation to installation
places.
[0010] In order to solve these problems, wireless dimming control technologies have been
developed and used instead of the existing cable communication scheme.
[0011] FIG. 3 is a block diagram illustrating a schematic configuration of a conventional
wireless control lighting apparatus.
[0012] As illustrated in FIG. 3, the conventional wireless control lighting apparatus 10
may include a power supply unit 20, a wireless communication unit 30, and a light
emitting module 60.
[0013] The power supply unit 20 receives an AC voltage V
AC, converts the AC voltage V
AC into a DC voltage suitable for driving the light emitting module 60, and outputs
the DC voltage to the wireless communication unit 30. A wireless communication module
40 of the wireless communication unit 30 receives and outputs a dimming signal transmitted
from a wireless controller 70, and a dimming control unit 50 of the wireless communication
unit 30 processes the applied DC voltage, based on the received dimming signal, and
supplies the processed DC voltage to the light emitting module 60. In this manner,
the conventional wireless control lighting apparatus 10 performs the dimming control.
[0014] The conventional wireless control lighting apparatus 10 using the above-described
scheme may solve the problem of the wired communication scheme. However, since the
dimming control is performed inside the wireless communication unit 30, the supply
of power to the light emitting module 60 is interrupted when a failure occurs in the
wireless communication unit 30, or when wireless communication is smoothly performed
between the wireless communication unit 30 and the wireless controller 70. Consequently,
the lighting apparatus 10 does not operate normally.
[Disclosure]
[Technical Problem]
[0015] An aspect of the present invention is directed to provide an optical semiconductor
lighting apparatus that is easy to install and construct and can surely maintain airtight
seal.
[0016] Another aspect of the present invention is to provide an optical semiconductor lighting
apparatus that can perform a dimming control to improve installation convenience and
stability by using a wireless communication module and a wired standard power supply
unit having an embedded dimming control function.
[0017] Another aspect of the present invention is directed to provide an optical semiconductor
lighting apparatus that can provide stable illumination, regardless of whether a wireless
communication unit operates.
[Technical Solution]
[0018] According to an embodiment of the present invention, an optical semiconductor lighting
apparatus includes: at least one or more clamping units formed along a longitudinal
direction of a race way; a housing in which a power supply unit (PSU) is disposed
in an upper portion thereof, and a light emitting module, in which a plurality of
semiconductor optical devices are formed in a row, is disposed in a lower portion
thereof, the housing being attached to or detached from the clamping unit; a first
sealing unit finishing both ends of the housing; and a second sealing unit disposed
between the housing and both edges of an optical member, which finishes a bottom surface
of the housing, the second sealing unit surrounding upper and lower portions of both
edges of the optical member.
[0019] The clamping unit may include a clamp that is connected to a bottom surface of the
race way and is attached to or detached from both sides of the upper portion of the
housing.
[0020] The clamping unit may further include: an upper fastener connected to the bottom
surface of the race way and penetrating in a vertical direction; and a lower fastener
connected to an outer periphery of the upper fastener passing through the clamp.
[0021] The clamp may include: a first fastening portion connected to the bottom surface
of the race way; and a second fastening portion extending from both edges of the first
fastening portion and connected to the housing.
[0022] The clamp may further include a clamping hook that extends from an edge of an end
of the second fastening portion and corresponds to a shape of a fastening groove formed
along a longitudinal direction of the housing on both sides of the upper portion of
the housing.
[0023] The clamping hook may be inclined upwardly toward a top surface of the housing.
[0024] The housing may include: a first body whose both ends are opened, in which a top
surface of the first body is connected to the clamping unit, and the PSU is embedded
therein; and a second body extending to be inclined from both edges of the bottom
surface of the first body and connected to both edges of the optical member. The first
sealing unit may finish an area where the housing and the optical member are formed.
[0025] The housing may include: a first body whose both ends are opened, in which a top
surface of the first body is connected to the clamping unit, and the light emitting
module is provided on a bottom surface of the first body; and a second body extending
to be inclined from both edges of the bottom surface of the first body and connected
to both edges of the optical member. The second sealing unit may be disposed at an
edge of an end of the second body and an edge of the optical member.
[0026] The first sealing unit may include: an end cap connected to both ends of the housing
that is connected to the clamping unit; and a first packing disposed between the end
cap and both ends of the housing. The first packing may include at least one or more
communication grooves receiving a cable for connecting the power supply unit and the
light emitting module. The first packing may be closely contacted with the optical
member.
[0027] The housing may include: a first body, an upper portion of which is connected to
the clamping unit; and a second body extending to be inclined from both edges of a
bottom surface of the first body and connected to both edges of the optical member.
The end cap may finish an area where the first body, the second body, and the optical
member are formed, and the first packing may be disposed along an edge where the second
body and the optical member are formed.
[0028] The first packing may further include: a removable connection portion extending from
an edge of the first packing; and a finish portion having an auxiliary groove having
a shape corresponding to the communication groove. The finish portion may be separated
from the connection portion to surround the cable.
[0029] The second sealing unit may include: a second packing surrounding a latch hook extending
to be inclined upwardly from an edge of the optical member; and at least one or more
protrusions formed on an outer surface of the second packing, closely contacted with
the housing, and elastically deformed.
[0030] The housing may include: a second body extending to be inclined from both edges of
a bottom surface of a first body, a top surface of which is connected to the clamping
unit, and connected to both edges of the optical member; and a close contact groove
recessed at an inner end of the second body along a longitudinal direction of the
housing. The latch hook and the second packing may be received in the close contact
groove.
[0031] The housing may further include a latch protrusion extending to be inclined upwardly
from an edge of a lower end of the close contact groove. An end of the latch hook
may face the latch protrusion. The second packing may be disposed between an upper
side of the latch protrusion and an end of the latch hook and may be disposed at the
close contact groove.
[0032] According to another embodiment of the present invention, an optical semiconductor
lighting apparatus includes: a housing in which a power supply unit (PSU) is disposed
in an upper portion thereof, and a light emitting module, in which a plurality of
semiconductor optical devices are formed in a row, is disposed in a lower portion
thereof; a first sealing unit finishing both ends of the housing; and a second sealing
unit disposed between the housing and both edges of an optical member, which finishes
a bottom surface of the housing, the second sealing unit surrounding upper and lower
portions of both edges of the optical member.
[0033] The housing may include: a first body whose both ends are opened, in which the PSU
is embedded; and a second body extending to be inclined from both edges of the bottom
surface of the first body and connected to both edges of the optical member. The first
sealing unit may finish an area where the housing and the optical member are formed.
[0034] The housing may include: a first body whose both ends are opened, in which the PSU
is embedded; and a second body extending to be inclined from both edges of the bottom
surface of the first body and connected to both edges of the optical member. The second
sealing unit may be disposed at an edge of an end of the second body and an edge of
the optical member.
[0035] The first sealing unit may include: an end cap connected to both ends of the housing;
and a first packing disposed between the end cap and both ends of the housing, the
first packing including at least one or more communication grooves receiving a cable
for connecting the power supply unit and the light emitting module, the first packing
being closely contacted with the optical member.
[0036] The housing may include: a first body whose both ends are opened, in which the PSU
is embedded; and a second body extending to be inclined from both edges of a bottom
surface of the first body and connected to both edges of the optical member. The end
cap may finish an area where the first body, the second body, and the optical member
are formed, and the first packing is disposed along an edge where the second body
and the optical member are formed.
[0037] The first packing may further include: a removable connection portion extending from
an edge of the first packing; and a finish portion having an auxiliary groove having
a shape corresponding to the communication groove. The finish portion may be separated
from the connection portion to surround the cable
[0038] The second sealing unit may include: a second packing surrounding a latch hook extending
to be inclined upwardly from an edge of the optical member; and at least one or more
protrusions formed on an outer surface of the second packing, closely contacted with
the housing, and elastically deformed.
[0039] The housing may include: a first body whose both ends are opened; a second body extending
to be inclined from both edges of a bottom surface of the first body and connected
to both edges of the optical member; and a close contact groove recessed at an inner
end of the second body along a longitudinal direction of the housing. The latch hook
and the second packing may be received in the close contact groove.
[0040] The housing may further include a latch protrusion extending to be inclined upwardly
from an edge of a lower end of the close contact groove. An end of the latch hook
may face the latch protrusion. The second packing may be disposed between an upper
side of the latch protrusion and an end of the latch hook and may be disposed at the
close contact groove.
[0041] The term "semiconductor optical device" used in claims and the detailed description
refers to a device that includes or uses an optical semiconductor, such as a light
emitting diode (LED) chip or the like.
[0042] The semiconductor optical devices may include package level devices with various
types of optical semiconductors, including the LED chip.
[Advantageous Effects]
[0043] According to the present invention, since the housing is detachably connected to
the race way by the clamping unit, installation and construction are easily achieved.
[0044] Due to the structure in which the housing is directly connected to the race way,
the connection state can be securely maintained even when an earthquake occurs. Also,
since the housing is easily separated from the clamping unit, the replacement, repair,
and inspection can be efficiently performed.
[0045] Since the first sealing unit is provided at both ends of the housing and the second
sealing unit is provided between the housing and the optical member, the airtight
seal can be maintained to prevent penetration of water or foreign particles.
[0046] Therefore, the first and second sealing units can prevent a short circuit and an
erroneous operation. Moreover, the first and second sealing units can prevent discoloration
and corrosion, thereby extending durability and lifespan.
[0047] Furthermore, the present invention can expect that the installation/control convenience
and stability of the optical semiconductor lighting apparatus can be improved by using
the wireless communication module and the wired standard power supply unit having
the embedded dimming control function.
[0048] Moreover, the present invention can expect that the stable illumination can be provided,
regardless of whether the wireless communication unit receiving the dimming signal
through the wireless communication network operates.
[0049] While the embodiments of the present invention have been described with reference
to the specific embodiments, it will be apparent to those skilled in the art that
various changes and modifications may be made without departing from the spirit and
scope of the invention as defined in the following claims.
[Description of Drawings]
[0050]
FIG. 1 is an exploded perspective view illustrating an overall configuration of an
optical semiconductor lighting apparatus according to an embodiment of the present
invention.
FIG. 2 is a block diagram illustrating a configuration of an optical semiconductor
lighting apparatus having a wireless control function according to a preferred embodiment
of the present invention.
FIG. 3 is a block diagram illustrating a configuration of a conventional wireless
control lighting apparatus.
[Best Mode]
[0051] Exemplary embodiments of the present invention will be described below in detail
with reference to the accompanying drawings.
[0052] FIG. 1 is an exploded perspective view illustrating an overall configuration of an
optical semiconductor lighting apparatus according to an embodiment of the present
invention.
[0053] As illustrated, the optical semiconductor lighting apparatus according to the embodiment
of the present invention is configured such that a housing 500 is detachably connected
to a race way 400, and a first sealing unit 100 and a second sealing unit 200 are
provided in the housing 500 to maintain airtight seal.
[0054] At least one or more clamping units 300 are formed along a longitudinal direction
of the race way 400 in order for connection to the housing 500.
[0055] A power supply unit (hereinafter, referred to as a PSU) 600 is disposed in an upper
portion of the housing 500. A light emitting module 700, in which a plurality of semiconductor
optical devices 701 are formed in a row, is disposed in a lower portion of the housing
500. The housing 500 is attached to or detached from the clamping unit 300.
[0056] The first sealing unit 100 finishes both ends of the housing 500 so as to prevent
penetration of water or foreign particles.
[0057] The second sealing unit 200 is disposed between the housing 500 and both edges of
an optical member 800, which finishes the bottom surface of the housing 500. The second
sealing unit 200 surrounds the upper and lower portions of both edges of the optical
member 800, and prevents penetration of water or foreign particles into the housing,
together with the first sealing 100.
[0058] It is apparent that the following various embodiments as well as the above-described
embodiment can be applied to the present invention.
[0059] As described above, the clamping unit 300 is provided for easily connecting the housing
500 to the race way 400. The clamping unit 300 may include a clamp 310 that is connected
to the bottom surface of the race way 400 and is attached to or detached from both
sides of the upper portion of the housing 500.
[0060] Specifically, in the clamping unit 300, an upper fastener 320 connected to the bottom
surface of the race way 400 and penetrating in a vertical direction passes through
the clamp 310, and a screw thread formed on the outer periphery of the upper fastener
320 is connected to a lower fastener 330.
[0061] A spacer 340 may be further mounted on the top or bottom surface or the clamp 310
so as to maintain spacing.
[0062] More specifically, in the clamp 310, a second fastening portion 312 extends from
both edges of a first fastening portion 311 connected to the bottom surface of the
race way 400. Therefore, the clamp 310 is connected to the housing 500.
[0063] Also, the clamp 310 includes a clamping hook 312' that extends from the edge of the
end of the second fastening portion 312 and corresponds to a shape of a fastening
groove 501 formed along a longitudinal direction of the housing 500 on both sides
of the upper portion of the housing 500.
[0064] The clamping hook 312' may be formed to be inclined upwardly toward the top surface
of the housing 500 so as to tightly maintain the connection state between the clamp
310 and the housing 500.
[0065] Meanwhile, as described above, the housing 500 provides a space for mounting the
first and second sealing units 100 and 200, and largely includes a first body 510
and a second body 520.
[0066] That is, the first body 510 is a member whose both ends are opened. The top surface
of the first body 510 is connected to the clamping unit 300. The PSU 600 is embedded
in the first body 510. The light emitting module 700 is provided on the bottom surface
of the first body 510. The second body 520 extends to be inclined from both edges
of the bottom surface of the first body 510, and is connected to both edges of the
optical member 800. The second body 520 serves as a reflector.
[0067] Although it is illustrated in FIG. 1 that the pair of the light emitting modules
700 are disposed in parallel to the bottom surface of the PSU 600, that is, in the
'-' shape on a straight line, the present invention is not limited thereto. The bottom
surface of the first body 510 is formed in a V shape according to the structural characteristic
of the second body 520 extending to be inclined from both edges of the first body
510. In this manner, modifications and applications can also be made to vary the illumination
range of light.
[0068] The first sealing unit 100 finishes the area where the housing 500 and the optical
member 800 are formed, and the second sealing unit 200 is disposed at the edge of
the end of the second body 520 and the edge of the optical member 800.
[0069] In this case, the first sealing unit 100 includes an end cap 110 connected to both
ends of the housing 500, and a first packing 120 disposed between both ends of the
housing 500.
[0070] The end cap 110 finishes the area where the first body 510, the second body 520,
and the optical member 800 are formed.
[0071] The first packing 120 includes at least one or more communication grooves 122, which
receive a cable 900 connecting the PSU 600 to the light emitting module 700, and is
closely contacted with the optical member 800.
[0072] That is, the first packing 120 is disposed along the edge where the second body 520
and the optical member 800 are formed.
[0073] In addition, the first packing 120 may include a finish portion 123 at an end of
a removable connection portion 121 extending from one edge of the first packing 120.
[0074] The finish portion 123 includes an auxiliary groove 122' having a shape corresponding
to the communication groove 122. When the connection portion 121 is removed, the finish
portion 123 is separated from the first packing 122 to surround the cable 900.
[0075] FIG. 1 illustrates the state in which the connection portion 121 and the finish portion
123 are connected to the first packing 120. However, when the first sealing unit 100
is actually connected to the housing 500, the end cap 110 is connected to the housing
500 by removing the connection portion 121 and then bringing the finish portion 123
into close contact with the first packing 120.
[0076] Meanwhile, the second sealing unit 200 includes a second packing 210 surrounding
a latch hook 810 extending to be inclined upwardly from the edge of the optical member
800.
[0077] The second packing 210 may include at least one or more protrusions 220 that are
formed on the outer surface thereof, are closely contacted with the housing 500, and
are elastically deformed.
[0078] The protrusion 220 facilitates the connection to the optical member 800, maintains
airtight seal between the optical member 800 and the second body 520, and prevents
shock or vibration from being directly transferred between the housing 500 and the
optical member 800.
[0079] For connection of the optical member 800 and the second sealing unit 200, it is preferable
that a close contact groove 522 is recessed at the inner end of the second body 520
along a longitudinal direction of the housing 500, and the latch hook 810 and the
second packing 210 are received in the close contact groove 522.
[0080] The second body 520 may further include a latch protrusion 522' extending to be inclined
upwardly from the edge of the lower end of the close contact groove 522 so as to prevent
the second packing 210 from being released.
[0081] In this case, the end of the latch hook 810 faces the latch protrusion 522', and
the second packing 210 is disposed between the upper side of the latch protrusion
522' and the end of the latch hook 810 and is disposed at the close contact groove
522. Therefore, the second sealing unit 200 surrounds the upper and lower sides of
the edge of the optical member 810, thereby further improving airtight seal.
[0082] FIG. 2 is a block diagram illustrating a configuration of an optical semiconductor
lighting apparatus having a wireless control function according to a preferred embodiment
of the present invention.
[0083] Hereinafter, the configuration and function of the optical semiconductor lighting
apparatus according to the preferred embodiment of the present invention will be described
with reference to the accompanying drawings.
[0084] As illustrated in FIG. 2, the optical semiconductor lighting apparatus having the
wireless control function according to the present invention may include a PSU 600,
a wireless communication unit 640, and a light emitting module 700.
[0085] First, the wireless communication unit 640 according to the present invention is
configured to perform wireless data communication between a wireless controller 650
and/or a wireless sensor 660 through a wireless communication network.
[0086] The wireless communication unit 640 may be configured to perform the wireless data
communication by using one of various known near field communication schemes, such
as infrared communication, Bluetooth communication, ZigBee communication, and wireless
LAN communication schemes.
[0087] The wireless communication unit 640 receives a dimming signal transmitted from the
wireless controller 650 and/or illuminance information of an illumination target area
transmitted from the wireless sensor 660 according to the user's manipulation, and
outputs the received dimming signal and/or illuminance information to the PSU 600.
[0088] Although FIG. 2 illustrates the embodiment in which the wireless communication unit
640 according to the present invention is provided inside the optical semiconductor
lighting apparatus 1000, the present invention is not limited thereto. If necessary,
the wireless communication unit 640 according to the present invention may be provided
outside the optical semiconductor lighting apparatus 1000.
[0089] In the case where the wireless communication unit 640 is provided outside the optical
semiconductor lighting apparatus 1000, the wireless communication unit 640 and the
optical semiconductor lighting apparatus 1000 are connected through a cable. It is
preferable that the wireless communication unit 640 and the optical semiconductor
lighting apparatus 1000 are configured to maintain airtight seal so as to prevent
penetration of water or foreign particles.
[0090] The light emitting module 700 includes a plurality of semiconductor optical devices
701, such as light emitting cells, LED elements, LED packages, LED chips, and LED
arrays. The light emitting module 700 receives DC power from the PSU 600 and emits
light.
[0091] It is apparent that the type, number, and arrangement of the semiconductor optical
devices 701 constituting the light emitting module 700 can be variously changed when
necessary. However, for convenience of description and understanding, the following
description will focus on the light emitting module 700 configured using LED elements.
[0092] Meanwhile, the PSU 600 according to the present invention is configured to perform
two functions.
[0093] First, the PSU 600 is connected to an external AC power source (for example, 220V
AC power source) and receives an AC voltage V
AC. Also, the PSU 600 converts the received AC voltage V
AC into a DC voltage suitable for driving the light emitting module 700, and supplies
the DC voltage to the light emitting module 700.
[0094] Also, the PSU 600 according to the present invention is configured to perform a dimming
control function of receiving a dimming signal and/or illuminance information from
the wireless communication unit 640, and controlling the illuminance of the light
emitting module 700, based on the received dimming signal and/or illuminance information.
[0095] In order to perform the above-described functions, the PSU 600 according to the present
invention may include a rectification unit 610, a control current control unit 630,
and a dimming control unit 620.
[0096] The rectification unit 610 performs a function of full-wave-rectifying the received
AC voltage into the DC voltage.
[0097] The rectification unit 610 may use a bridge diode type rectification circuit configured
using a widely-used bridge diode, but the present invention is not limited thereto.
Various types of full-wave rectification circuits can also be applied to the rectification
unit 610 according to the present invention.
[0098] Also, a noise filter (not illustrated) for removing noise from the AC voltage and
a fuse circuit for preventing inflow of overcurrent may be further included at a front
end of the rectification unit 610. Also, a stabilization circuit (not illustrated)
(for example, a smoothing capacitor) for removing AC component and a power factor
compensation circuit (not illustrated) may be further included at a rear end of the
rectification unit 610.
[0099] Since the configuration and function of the rectification unit 610 employ known technologies,
a detailed description thereof will be omitted.
[0100] The constant current control unit 630 performs a control function of sensing a current
flowing through the light emitting module 700 and maintaining the current flowing
through the light emitting module 700 at a set constant current value.
[0101] The dimming control unit 620 is configured to control the illuminance of the light
emitting module 700 according to the dimming signal and/or the illuminance information
input from the wireless communication unit 640.
[0102] Generally, the dimming control for the light emitting module 700 configured with
a plurality of LEDs may be performed using one of two methods.
[0103] The dimming control unit 620 according to the present invention may be configured
to perform the dimming control according to one of two methods described below.
1. Dimming Control Unit According to First Embodiment (Analog Dimming Control)
[0104] The dimming control unit 620 according to the first embodiment of the present invention
is configured to perform the dimming control by controlling the magnitude of the forward
current flowing through the light emitting module 700, that is, the current value,
in an analog manner.
[0105] When the dimming signal is input from the wireless communication unit 640, the dimming
control unit 620 determines a level of a current sensed through the constant current
control unit 630, and controls the constant current control unit 630 to increase or
decrease the current flowing through the light emitting module 700 according to the
dimming level of the input dimming signal.
[0106] In a similar manner, when the illuminance information is input from the wireless
communication unit 640, the dimming control unit 620 calculates the dimming level,
based on the current illuminance information according to dimming control setting
information and a preset algorithm, and performs the dimming control by controlling
the constant current control unit 630 to increase or decrease the current flowing
through the light emitting module 700, based on the calculated dimming level.
[0107] Meanwhile, according to other configurations, the dimming control may be performed
by directly increasing or decreasing the magnitude of the DC voltage applied to the
light emitting module 700, without directly controlling the current flowing through
the light emitting module 700.
2. Dimming Control Unit According to Second Embodiment (Pulse Width Modulation (PWM)
Diming Control)
[0108] The dimming control unit 620 according to the second embodiment of the present invention
is configured to control the illuminance of the light emitting module 700 by using
a PWM scheme.
[0109] The PWM dimming control refers to a dimming control scheme that controls the illuminance
of the light emitting module 700 by turning on/off the DC voltage supplied to the
light emitting module 700 according to a PWM signal.
[0110] Therefore, when the dimming signal and/or the illuminance information are/is input
from the wireless communication unit 640, the dimming control unit 620 according to
the second embodiment of the present invention performs the dimming control by adjusting
a duty ratio of the PWM signal, based on the input dimming signal and/or illuminance
information.
[0111] Also, as opposed to the conventional wireless control light apparatus described above
with reference to FIG. 3, the PSU 600 according to the present invention is configured
to perform the normal operation, that is, to continuously supply the DC voltage to
the light emitting module 700, regardless of whether or not the wireless communication
unit 640 operates.
[0112] In order to perform this function, the PSU 600 according to the present invention
is configured to supply the DC voltage to the light emitting module 700 according
to a preset reference value, and perform the dimming control only when the dimming
signal and/or the illuminance information are/is input from the wireless communication
unit 640.
[0113] Also, after the dimming signal and/or the illuminance information are/is input and
thus the dimming control is performed based on the dimming signal and/or the illuminance
information, the operation of the light emitting module 700 may be controlled according
to the dimming level based on the previous dimming signal and/or illuminance information,
until other dimming signal and/or illuminance information are/is newly input.
[0114] According to other configurations, the PSU 600 according to the present invention
is configured to monitor the state of the wireless communication unit 640, and control
the operation of the light emitting module 700 according to the preset reference value
when it is determined that a failure occurs in the wireless communication unit 640.
[0115] For example, when the preset reference value is set to 80% of the maximum dimming
level, the PSU 600 performs the dimming control such that the dimming level of the
light emitting module 700 becomes 80%, when it is determined that a failure occurs
in the wireless communication unit 640, or when it is determined that a failure occurs
in the wireless communication.
[0116] It is apparent to those skilled in the art that the reference value can be set variously
if necessary. Also, various known technologies can be used for determining whether
a failure occurs in the wireless communication unit 640.
[0117] On the other hand, the PSU 600 according to the present invention may be implemented
using a wired standard PSU with an embedded dimming control function.
[0118] The most significant technical characteristic of the optical semiconductor lighting
apparatus according to the present invention is that the optical semiconductor lighting
apparatus having the wireless control function can be configured simply and easily
by using the wired standard PSU having the dimming control function and the wireless
communication unit capable of receiving the dimming signal, and the illumination can
be continuously provided even when a failure occurs in the wireless communication
unit 640, or even when a failure occurs in the wireless communication.
[0119] Meanwhile, the wireless controller 650 and the wireless sensor 660, which are illustrated
in FIG. 2 together with the optical semiconductor lighting apparatus 1000, are configured
to perform wireless data communication with the wireless communication unit 640 of
the optical semiconductor lighting apparatus 1000.
[0120] The wireless controller 650 is configured to transmit the input dimming signal to
the optical semiconductor lighting apparatus 1000 according to the manipulation of
the user or manager.
[0121] The wireless sensor 660 is installed in a predetermined area where dimming is performed
by the optical semiconductor lighting apparatus 1000, and is configured to sense the
current illuminance of the dimming area and transmit the sensed illuminance information
to the optical semiconductor lighting apparatus 1000.
[0122] As described above, the basic technical spirit of the present invention is to provide
the optical semiconductor lighting apparatus is easy to install and construct, can
surely maintain airtight seal, can perform the dimming control to improve the installation
convenience and stability by using the wireless communication module and the wired
standard PSU having the embedded dimming control function, and can provide stable
illumination, regardless of whether the wireless communication unit operates.
[0123] It is apparent to those skilled in the art that various modifications and applications
can also be made without departing from the basic technical spirit and scope of the
present invention. For example, the clamping unit 300 may be omitted, and the housing
500 may be directly fixed to the race way 400 through a fastener such as a bolt. Although
not specifically illustrated, a pendent type lighting apparatus can be implemented
by connecting the race way 400 and the housing 500 through various members, such as
wires or chains, instead of the clamping unit 300.
[Industrial Applicability]
[0124] As described above, the basic technical spirit of the present invention is to provide
the optical semiconductor lighting apparatus that is easy to install and construct
and can surely maintain airtight seal.
1. An optical semiconductor lighting apparatus comprising:
at least one or more clamping units formed along a longitudinal direction of a race
way;
a housing in which a power supply unit (PSU) is disposed in an upper portion thereof,
and a light emitting module, in which a plurality of semiconductor optical devices
are formed in a row, is disposed in a lower portion thereof, the housing being attached
to or detached from the clamping unit;
a first sealing unit finishing both ends of the housing; and
a second sealing unit disposed between the housing and both edges of an optical member,
which finishes a bottom surface of the housing, the second sealing unit surrounding
upper and lower portions of both edges of the optical member.
2. The optical semiconductor lighting apparatus of claim 1, wherein the clamping unit
comprises a clamp that is connected to a bottom surface of the race way and is attached
to or detached from both sides of the upper portion of the housing.
3. The optical semiconductor lighting apparatus of claim 2, wherein the clamping unit
further comprises:
an upper fastener connected to the bottom surface of the race way and penetrating
in a vertical direction; and
a lower fastener connected to an outer periphery of the upper fastener passing through
the clamp.
4. The optical semiconductor lighting apparatus of claim 2, wherein the clamp comprises:
a first fastening portion connected to the bottom surface of the race way; and
a second fastening portion extending from both edges of the first fastening portion
and connected to the housing.
5. The optical semiconductor lighting apparatus of claim 4, wherein the clamp further
comprises a clamping hook that extends from an edge of an end of the second fastening
portion and corresponds to a shape of a fastening groove formed along a longitudinal
direction of the housing on both sides of the upper portion of the housing.
6. The optical semiconductor lighting apparatus of claim 5, wherein the clamping hook
is inclined upwardly toward a top surface of the housing.
7. The optical semiconductor lighting apparatus of claim 1, wherein the housing comprises:
a first body whose both ends are opened, in which a top surface of the first body
is connected to the clamping unit, and the PSU is embedded therein; and
a second body extending to be inclined from both edges of the bottom surface of the
first body and connected to both edges of the optical member,
wherein the first sealing unit finishes an area where the housing and the optical
member are formed.
8. The optical semiconductor lighting apparatus of claim 1, wherein the housing comprises:
a first body whose both ends are opened, in which a top surface of the first body
is connected to the clamping unit, and the light emitting module is provided on a
bottom surface of the first body; and
a second body extending to be inclined from both edges of the bottom surface of the
first body and connected to both edges of the optical member,
wherein the second sealing unit is disposed at an edge of an end of the second body
and an edge of the optical member.
9. The optical semiconductor lighting apparatus of claim 1, wherein the first sealing
unit comprises:
an end cap connected to both ends of the housing that is connected to the clamping
unit; and
a first packing disposed between the end cap and both ends of the housing, the first
packing including at least one or more communication grooves receiving a cable for
connecting the power supply unit and the light emitting module, the first packing
being closely contacted with the optical member.
10. The optical semiconductor lighting apparatus of claim 9, wherein the housing comprises:
a first body, an upper portion of which is connected to the clamping unit; and
a second body extending to be inclined from both edges of a bottom surface of the
first body and connected to both edges of the optical member,
wherein the end cap finishes an area where the first body, the second body, and the
optical member are formed, and the first packing is disposed along an edge where the
second body and the optical member are formed.
11. The optical semiconductor lighting apparatus of claim 9, wherein the first packing
further comprises:
a removable connection portion extending from an edge of the first packing; and
a finish portion having an auxiliary groove having a shape corresponding to the communication
groove, the finish portion being separated from the connection portion to surround
the cable.
12. The optical semiconductor lighting apparatus of claim 1, wherein the second sealing
unit comprises:
a second packing surrounding a latch hook extending to be inclined upwardly from an
edge of the optical member; and
at least one or more protrusions formed on an outer surface of the second packing,
closely contacted with the housing, and elastically deformed.
13. The optical semiconductor lighting apparatus of claim 12, wherein the housing comprises:
a second body extending to be inclined from both edges of a bottom surface of a first
body, a top surface of which is connected to the clamping unit, and connected to both
edges of the optical member; and
a close contact groove recessed at an inner end of the second body along a longitudinal
direction of the housing,
wherein the latch hook and the second packing are received in the close contact groove.
14. The optical semiconductor lighting apparatus of claim 13, wherein:
the housing further comprises a latch protrusion extending to be inclined upwardly
from an edge of a lower end of the close contact groove;
an end of the latch hook faces the latch protrusion; and
the second packing is disposed between an upper side of the latch protrusion and an
end of the latch hook and is disposed at the close contact groove.
15. An optical semiconductor lighting apparatus comprising:
a housing in which a power supply unit (PSU) is disposed in an upper portion thereof,
and a light emitting module, in which a plurality of semiconductor optical devices
are formed in a row, is disposed in a lower portion thereof;
a first sealing unit finishing both ends of the housing; and
a second sealing unit disposed between the housing and both edges of an optical member,
which finishes a bottom surface of the housing, the second sealing unit surrounding
upper and lower portions of both edges of the optical member.
16. The optical semiconductor lighting apparatus of claim 15, wherein the housing comprises:
a first body whose both ends are opened, in which the PSU is embedded; and
a second body extending to be inclined from both edges of the bottom surface of the
first body and connected to both edges of the optical member,
wherein the first sealing unit finishes an area where the housing and the optical
member are formed.
17. The optical semiconductor lighting apparatus of claim 15, wherein the housing comprises:
a first body whose both ends are opened, in which the PSU is embedded; and
a second body extending to be inclined from both edges of the bottom surface of the
first body and connected to both edges of the optical member,
wherein the second sealing unit is disposed at an edge of an end of the second body
and an edge of the optical member.
18. The optical semiconductor lighting apparatus of claim 15, wherein the first sealing
unit comprises:
an end cap connected to both ends of the housing; and
a first packing disposed between the end cap and both ends of the housing, the first
packing including at least one or more communication grooves receiving a cable for
connecting the power supply unit and the light emitting module, the first packing
being closely contacted with the optical member.
19. The optical semiconductor lighting apparatus of claim 18, wherein the housing comprises:
a first body whose both ends are opened, in which the PSU is embedded; and
a second body extending to be inclined from both edges of a bottom surface of the
first body and connected to both edges of the optical member,
wherein the end cap finishes an area where the first body, the second body, and the
optical member are formed, and the first packing is disposed along an edge where the
second body and the optical member are formed.
20. The optical semiconductor lighting apparatus of claim 18, wherein the first packing
further comprises:
a removable connection portion extending from an edge of the first packing; and
a finish portion having an auxiliary groove having a shape corresponding to the communication
groove, the finish portion being separated from the connection portion to surround
the cable
21. The optical semiconductor lighting apparatus of claim 15, wherein the second sealing
unit comprises:
a second packing surrounding a latch hook extending to be inclined upwardly from an
edge of the optical member; and
at least one or more protrusions formed on an outer surface of the second packing,
closely contacted with the housing, and elastically deformed.
22. The optical semiconductor lighting apparatus of claim 21, wherein the housing comprises:
a first body whose both ends are opened;
a second body extending to be inclined from both edges of a bottom surface of the
first body and connected to both edges of the optical member; and
a close contact groove recessed at an inner end of the second body along a longitudinal
direction of the housing,
wherein the latch hook and the second packing are received in the close contact groove.
23. The optical semiconductor lighting apparatus of claim 22, wherein:
the housing further comprises a latch protrusion extending to be inclined upwardly
from an edge of a lower end of the close contact groove;
an end of the latch hook faces the latch protrusion; and
the second packing is disposed between an upper side of the latch protrusion and an
end of the latch hook and is disposed at the close contact groove.